Abstract: Preventive supervision on occupational health covering from the feasibility assessment to a subscribed construction project at the beginning to the simultaneous design, construction, and operation of occupational hazard control facilities and the core of the construction project is required by law. But preventive supervision does not meet the requirement in some areas of China. This article focused on exploring a new work model of preventive supervision on occupational health based on the experience of Changxing County of Zhejiang Province, and provided reference for the future breaking through in preventative supervision.